JPS58199134A - Laminated pipe used for fishing rod, etc. and its manufacture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated pipe used as a fishing rod, golf club shaft, etc., and a method for manufacturing the same.

Conventionally, this type of laminated pipe is made of fibers such as glass fiber and carbon fiber, as well as phenol and epoxy.

It is formed into a tubular shape by wrapping a prepreg impregnated with a thermosetting resin such as unsaturated polyester around a core metal and curing the resin. However, when this laminated tube is used for a connecting rod or a swinging rod, the fiber material tends to become fluffed within the tube diameter due to deformation and use, making it difficult to remove a small diameter rod that is inserted into a larger diameter rod. There is a drawback. Conventionally, when forming a laminated pipe, the above-mentioned prepreg is wrapped around a core metal and the rear outer surface is tightened with cellophane tea 1 or a sheet, or the prepreg is inserted into a splittable female mold. The prepreg is heated and cured in this state. However, these methods require taping and tape removal work, and the shape of one repreg is easily deformed when tightening, and furthermore, the tape or sheet tightening marks and split mold parting lines may be formed. The remaining outer diameter requires grinding, centerless processing, painting, etc., and furthermore, since the outer diameter is removed, it is difficult to form a tube with uniform wall thickness.

An object of the present invention is to provide a laminated pipe and a method for manufacturing the same which eliminates such drawbacks.

That is, in the present invention, a resin film is adhered and fixed to the radially inner surface of a tube body formed of prepreg to create a laminated tube with a smooth inner surface, and the heat-resistant film side after attaching the heat-resistant film to the prepreg is It is wound around a core metal so that it is located on the inner surface, and after the core metal is removed from the tube, it is inserted into a tubular outer mold that can be kept airtight, and then air or gas is injected into the diameter of the tube. By heat treatment, the tube body is tightly pressed against the outer mold by the expansion of air or gas, and the inner surface has a smooth resin film surface, the outer surface has a mirror finish, and it has a dense structure with no air bubbles within the wall thickness. It is adapted to form a laminated tube.

This will be explained below based on the illustrated embodiments.

The 1 rib leg 1Fi shown in the figure uses phenol and epoxy on fibers such as glass fiber and carbon fiber.

It is impregnated with a thermosetting resin made of unsaturated polyester and formed into a cloth or sheet shape.

A heat-resistant resin film 2 made of polyester, polypropylene, or the like is bonded and fixed to one side of the prepreg 10 using an adhesive (see α in FIG. 1).

During this lamination, in order to improve the adhesiveness of the prepreg 1 to the resin, it is preferable to apply a corona discharge treatment to the prepreg surface to make it a rougher surface (see Figure 1). Also,
The inner surface of the resin film 2 is made of silicon to facilitate release from the core metal, which will be described later.

It is preferable to provide a mold release agent layer 3 such as Teflon.
Fi, Si'Jcon, 'Teflon solution tm can be applied to the fat film 2 and then heat-treated to enable close contact molding. The resin film 2 with this mold release layer has a thickness of about 12 to 25 μm, and is adhered to the flat surface of the prepreg 1 over a width slightly longer than the inner diameter circumference of the cylinder formed by the prepreg 1. Fix it.

Next, the prepreg 1 is wrapped around the core bar 4 with the surface to which the Jff film 3f is attached as its own. The prepreg 1 is wound around the core metal 4Fi, which is a round rod-shaped one, so that the 1llITriK resin film is in contact with the circumference in the axial direction (the second
(see figure).

The prepreg 1Fi wound around the core metal 4 is inserted into an outer mold 5 whose axial inner circumferential surface is shaped to correspond to the outer surface of a fishing rod, for example (see FIG. 1 α).

Mold 5Fi is made of metal or prepreg molded into a tubular shape, and a pressure valve, a cap with an air injection nozzle, and a mounting bracket 6.6 for attaching and detaching the sealing cap are attached to the outer periphery (No. (See Figure 6).

When this mold is made of prepreg, a resin film 8 having a mold release surface is affixed to a glass cloth 7 impregnated with a thermosetting resin, and a core metal 9 corresponding to the outer peripheral surface shape of the laminated tube is attached. The outer periphery can be further wrapped with cellophane tape or the like by applying pressure, heating and hardening it, and removing the core metal 9 after cooling. In addition, in order to improve the strength of the outer mold or to match the inner diameter of the outer periphery 1 of the outer mold with the inner diameter of the mounting bracket 6.6, a reinforcing piece 10.10 formed of glass cloth can be integrally wound. (See Figure 3C).

After the prepreg 1f wound into a tubular shape is inserted into the mold 5, it is pulled out from within the diameter of the prepreg 1 onto the core bar 4. At this time, the core metal 4 may be strained to remove the entire length of the axis, but a portion of the core metal 4 should be left in areas where the inner diameter dimension needs to be restricted, for example, in the area corresponding to the fishing rod's socket. (Fig. 4 α)
reference). In this case, the core metal 4 is formed of two rod-shaped members 4α and 4b that can be inserted and removed in the axial direction (see FIG. 4). This core metal can be easily removed using the smooth surface layer 6 formed from the mold release agent of the resin film, and after removal, the outer mold 5
After fitting the air injection cap 11 and the sealing carriage 12i to the mounting bracket 6.6 with a ball joint to make the outer mold 5 airtight, air or gas is injected into the diameter of the tubular prepreg 1. . When air or gas is injected into the housing to reach a predetermined pressure, this pressure forces the Gripreg 1 from the inside and presses it against the inner circumferential surface of the outer mold 5 to a certain extent.

After this air or waste injection, the outer mold 5 is carried into a firing furnace, and the prepreg 1 is subjected to a heat treatment. The heating conditions are as shown in the following table.

During this heat treatment, the air or gas filled within the diameter of the tubular prepreg 1 expands and presses the tubular prepreg against the inner diameter surface of the outer mold 5. The clamping force is extremely large, and even if there is a bubble gap between the 10 layers of prepreg, it is pressed against the heat-resistant film 2 from within the diameter so as to crush it and expel the air from the end face of the prepreg 1 to the outside. do. Further, the outer peripheral surface of the prepreg 1 is pressed against the radial inner surface of the outer mold 5, so that it is molded as a mounting surface. In addition,
When the pressure inside the mold exceeds a predetermined pressure, a pressure valve provided in the air backflow nozzle is activated to release air or gas to the outside, thereby returning the inside of the outer mold 5 to normal pressure.

The outer mold 5 cooled after the heat treatment is taken out from the firing furnace, and
After removing the camps 11 and 12 at both ends, the hardened cylinder 1' is extracted from the outer mold 5. In this case, it can be done by using the insertion rod 14 whose stroke is extended by the hydraulic cylinder 16, and if the rod-shaped member 4bFi of the core metal 4, which is partially left within the diameter of the cylinder 1', moves to a certain extent, the cylinder 1 ′ can be easily removed by holding it vertically. Also, outer mold 5. Each inner ball surface of the cylindrical body 1' is provided with a smooth layer made of a mold release agent, so that the cylindrical body 1' and the core rod-shaped member 4b can be easily extracted (see Fig. 5). .

Since the laminated layer 1th manufactured in this way is lined with a flat resin film 2, a small diameter fishing rod can be stored and taken out within its diameter. Fishing rod members can be taken in and out smoothly without fuzzing of certain gelatin fibers, carboxy fibers, etc. In addition, the lining can improve the impact resistance of the tubular body, and it is suitable as a shaft for a golf club as a cylindrical body that only has a certain degree of elasticity and has sufficient strength. The outer circumferential surface of the laminated pipe is molded into a tubular shape with a good outer shape 5
It is pressed against the inner diameter surface of the K to form a trowel surface, and the wall thickness is uniform because it is pressed under high pressure, and there are no voids in the layer.It is molded as a stronger cylinder than K. There is.

In addition, the part corresponding to the fishing rod outlet can be regulated by the rod-shaped member 4bK of the core metal 4 to ensure accurate dimensions.
It is possible to ensure the joint of the connecting rod.

As described above, according to the present invention, it is possible to create a tube body that has a high strength f and allows easy insertion and removal of the rod, without the need for nine outer diameter grinding banks, centerless processing, painting, etc. This makes it possible to manufacture tubes with high efficiency.

[Brief explanation of the drawing]

[Title 1 wJ, h is an explanatory diagram of a friend brimbreg with a resin film attached, Figure 2 is an explanatory diagram of the process of wrapping the prepreg around the core metal, and Figure 3 a is the inside of the outer mold of the prepreg wrapped around the core metal. Fig. 3 is an explanatory diagram of the process of the device, Fig. 3 is a partially cutaway explanatory diagram of the outer mold, Fig. 3 C is an explanatory diagram of the molding state of the outer mold, Fig. 4 α is an explanatory diagram of the process of removing the core metal, Fig. 4 is FIG. 5 is an explanatory diagram of the process of removing the outer mold and core metal member, and FIG. 6 is a partially cutaway explanatory diagram of the cylindrical body. DESCRIPTION OF SYMBOLS 1... Prepreg, 1'... Tube body, 2... Heat-resistant resin film, 3... Clear surface layer made of mold release agent, 4 (4α,
4b)...Core metal, 5...Outer mold. Patent Applicant Ryobi Co., Ltd. Captive 4 & Co., Ltd. v, Figure 4 (b) Figure 5 4 60 1' 1925, 1920, Showa 7th, 1939 Fee Application No. ♂27/S Relationship with the incident
'lrb, person of origin UI j/t;(硅;) tN Riryobi Co., Ltd. 4 Agent 6 Number of inventions increased by drawing)・)Next in

Claims (1)

[Scope of Claims] +11 A resin film of polyester, polypropylene, etc. on the inner diameter of a tube body formed from prepreg made of fibers such as glass fiber or carbon fiber impregnated with a thermosetting resin such as phenol, epoxy, or unsaturated polyester. A laminated pipe used for fishing rods, etc., characterized by the fact that it is made by pasting the same. (2) The laminated pipe according to claim 1, wherein the resin film has a smooth layer formed with a mold release agent on the innermost surface. (3) A heat-resistant film such as polyester or polypropylene is attached to a prepreg made of fibers such as glass fiber or carbon fiber impregnated with a thermosetting resin such as phenol, epoxy, or unsaturated polyester, and the prepreg is removable. The core metal is wound into a tubular shape so that the heat-resistant film side is located on the inner surface, and the tubular body is inserted into a tubular outer mold whose radially inner surface in the axial direction is formed in a predetermined shape and can be maintained airtight. A core metal tube is extracted from the inside diameter, air or gas is injected into the tube body diameter until a predetermined pressure is reached, the tube body is pressed against the radial inner surface of the outer mold, and the air or gas is expanded by applying heat treatment. A method for manufacturing a laminated tube for use in fishing rods, etc., characterized in that the tube body is brought into tension-pressure contact with the radial inner surface of an outer mold from eζ, and then the resin-cured tube body is extracted from the outer mold. (4) The method for manufacturing a laminated tube according to claim 6, wherein a smooth layer is formed on the inner surface of the heat-resistant film using a mold release agent. (5) The method for manufacturing a laminated pipe according to claim 6, wherein the core metal is removed leaving a portion of the metal core within the diameter corresponding to the spout near the end of the cylindrical body. (6) The method for manufacturing a laminated pipe according to claim 6, wherein the outer mold has a smooth layer formed with a mold release agent on its radially inner surface.